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dc.contributorVirginia Techen_US
dc.contributor.authorEllingson, S. W.en_US
dc.contributor.authorClarke, Tracy E.en_US
dc.contributor.authorCraig, J.en_US
dc.contributor.authorHicks, B. C.en_US
dc.contributor.authorLazio, T. J. W.en_US
dc.contributor.authorTaylor, G. B.en_US
dc.contributor.authorWilson, T. L.en_US
dc.contributor.authorWolfe, C. N.en_US
dc.date.accessioned2014-02-25T13:57:04Z
dc.date.available2014-02-25T13:57:04Z
dc.date.issued2013-05-01
dc.identifier.citationS. W. Ellingson et al. 2013. "observations of crab giant pulses in 20-84 MHz using LWA1," ApJ 768 136 doi:10.1088/0004-637X/768/2/136
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/10919/25546
dc.description.abstractWe report the detection and observed characteristics of giant pulses from the Crab Nebula pulsar (B0531+21) in four frequency bands covering 20-84 MHz using the recently completed Long Wavelength Array Station 1 (LWA1) radio telescope. In 10 hr of observations distributed over a 72 day period in fall of 2012, 33 giant pulses having peak flux densities between 400 Jy and 2000 Jy were detected. Twenty-two of these pulses were detected simultaneously in channels of 16 MHz bandwidth centered at 44 MHz, 60 MHz, and 76 MHz, including one pulse which was also detected in a channel centered at 28 MHz. We quantify statistics of pulse amplitude and pulse shape characteristics, including pulse broadening. Amplitude statistics are consistent with expectations based on extrapolations from previous work at higher and lower frequencies. Pulse broadening is found to be relatively high, but not significantly greater than expected. We present procedures that have been found to be effective for observing giant pulses in this frequency range.
dc.description.sponsorship6.1 base funding
dc.description.sponsorshipOffice of Naval Research N00014-07-C-0147
dc.description.sponsorshipNational Science Foundation of the University Radio Observatories program AST-1139963, AST-1139974
dc.description.sponsorshipNational Radio Astronomy Observatory
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_US
dc.publisherIOP Publishing Ltd.
dc.subjectISM: individual objects (crab nebula)en_US
dc.subjectISM: structureen_US
dc.subjectPulsars: generalen_US
dc.subjectpulsars: individual (crab pulsar)en_US
dc.subjectScatteringen_US
dc.subjectNebula pulsaren_US
dc.subjectRadio sourcesen_US
dc.subjectScatteringen_US
dc.subjectDispersionen_US
dc.subjectVariabilityen_US
dc.subjectBurstsen_US
dc.subjectSystemsen_US
dc.subjectArrayen_US
dc.subjectCASen_US
dc.titleObservations of crab giant pulses in 20-84 MHz using LWA1en_US
dc.typeArticleen_US
dc.identifier.urlhttp://iopscience.iop.org/0004-637X/768/2/136/pdf/0004-637X_768_2_136.pdf
dc.date.accessed2014-02-05
dc.title.serialAstrophysical Journal
dc.identifier.doihttps://doi.org/10.1088/0004-637x/768/2/136
dc.type.dcmitypeTexten_US


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